Higaki, Shogo
Shimada, Manami
Kawamoto, Kazuaki
Todo, Takaaki
Kawasaki, Toshihiro
Tooyama, Ikuo
Fujioka, Yasuhiro
Sakai, Noriyoshi
Takada, Tatsuyuki
Article History
Received: 20 September 2016
Accepted: 18 January 2017
First Online: 17 February 2017
Competing interests
: The authors declare no competing financial interests.